‘Phonograph’ Tests Mentality (May, 1938)

‘Phonograph’ Tests Mentality
DESIGNED to aid psychologists in determining the mental rating of patients of the crime clinic at the Institute For The Scientific Treatment of Delinquency in London, England, a newly developed machine resembles a portable phonograph in appearance and operation. A waxed record, bearing a series of small red dots, is revolved at varying speeds and the patient is required to jab at the dots with a stylus pen, the number of hits or misses serving to classify the patient’s mentality.

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